Spray nozzle



Sept. l0, 1929. s. DEBus l 1,727,464

SPRAY NOZZLE Filed Oct. '7, 1927 gmptqfp y v Jandef ews.

Y awww! maar Patented Sept. 10, 1929.

UNTES "S'lt'ildsg lIJjTENT OFFICE.`

SANDER minus, or nas'rines, NEBRASKA. y K

SPRAY` NozzLn. H i y Application ned october r, 1927. sei-m1 No. 224,766.

upper'edge thereof so that when it is turned home it will form a ground joint with the base ymember andy willeXtend over and cover the entire top rofthe same. A central bore 12 is formed through the intermediatemember 10'and wheny the parts are properly'assembled, 4this bore is alined with the bore of ythe nipple'3,- the intermediate member being secured on the base member by a depending hub 13 which is internally thread- This invention is a nozzle for spraying grease upon baking pans and has for its object the provision oit'a nozzle so constructed that it will be ellicient in operation and its several parts may be easily assembled for use ordisassembled when cleaning or repair ing is necessary. The invention also pro vides nozzle of such construction that leakage is avoided without the use of packing which is apt to deteriorate. The invention is illustrated inthe accompanying drawing and will be hereinafter fully set forth.

ln the drawing: ,n n y Figure 1 is an elevation of my improved nozzle arranged tor use7 a baking pan being illustrated in section;

Fig. 2 is an enlarged of the nozzle, and

Fig. 3 is a topfplan view of the nozzle with the top or cap member thereof removed.

In carrying `out the present invention. there is provided a base member 1 which is circular in termy as viewed from above and is hollow with open top, as shown at 2,`to provide an air chamber of large capacity. Disposed centrally in the chamber 2, a threaded nipple 3 rises from the bottom of the base member and the bore oi' this nipple `is extended` through the bottom and through a lower nipple l which depends from the bottom, as clearly shown in Fig. 2. rlhese nipples are both externally threaded and the lower nipple l is intended vto receive a coupling sleeve or collar 5 whereby the oil supply pipe 6 is attached to the nozzle. The base member` 1 isy also provided with a tubular projection 7 on its periphery, and .this projection may be `tormed integral .with orr constructed to be eoupledto a valve casing 8 in which is mounted a eut-oil valve whereby theilow of nir may be controlled, the air supply pipe, shown at 9, being coupled to the valve in any approved manner. The top edge of Ithe annular wall ot the base member is machined to a dat smooth surface and an intermediate member 10 of circular form is con structed in its lower side with an annular rabbet 11 whereby it may tit closely within the wall oit. the base member and resten 'the 3, as clearlyshown in Fig. 2. Socket-S14 are provided in the outer circumference of the intermediate nozzle member 10 to be en gaged by a Spannery or other turning tool so that the member may be easily turned home upon 'l the base member. L The intermediate memberris of such :form that it provides a central upstanding portion 15 in the form ot a' truncated ycone and an annular rim diametrical section spaced from the central conical [extensiony 15. Air passages 17 are formed through the intermediate member `10 with their lower ends opening'through the bottom thereof to esber2 in the basemember and their upper ends opening through the intermediate mem' ber at the base of the truncated cone 15, as shown in Fig. 2. Oil passages 18 are also passages diverge upwardly with their lower ends `'opening into the kcentral bore 12 of the .member and their outer ends opening through the circumferential surface ofA the cone, as shown in Figs. 2`and 3. The bore 12 is internally threaded at its upper exu tremity'So as to be engaged by .the threadedst-ud 19,at the lower end ofr a spreader 20, and this spreader has a lower portion of suchy form that it meets the surface of the cone 15 ilush therewith to 'form an uninterrupted; continuation of the same when the parts are assembled. The upper extremity of thespreader yis flared so that the risingk stream of` air and grease willbe deflected 4and spread in an obviousmanner. vTo facilitate the placing of the spreader, a notch 21 is formed in theupper surface thereoto be engaged byal screw driver or similar tool.

ed `and engaged over and ywith the nipple A member 16 which is internally threaded and tablislfcommunication with the air chaml formed ythrough the cone 15,` and these oil g a continuation thereof, sockets 23 being provided in the surface of the cap member to be'engaged by. a Spanner or other turn-k ing tool. y This cap member is constructed externally to provide an annular shoulder24 adapted to rest upon the upper edge of the rim of the intermediate member and form a ground Joint therewith when turned home, and depending from said shoulder is a threaded extension 25 which is adapted to engage internal threads on the annular rim or wall 16 so that the cap member may be easily secured in place and be held when it is secured. The eXtreme lower edge ot the extension 25 is machine finished so that it Will form a ground joint with the surface of .the intermediate Vmember between the rim or wall 16 and the cone 15 and leakage of air orf'oil at any point of the nozzle is thereby avoided. .The bore of the cap member 22 is tapered upwardly and is at lall, points of greater Vdiameter than the ccrrespondingrdiameter :of the cone 15 Vso that when the cap member is vturned home an annularl passage 26 will be provided between thecone 15;,and the,A cap member and intowhich theA air passages 17 deliver. The tapered bore ofthe cap member terminates in the vsame horizontaly plane With the upper vend of the cone15 and from that point the cap is flared, as shown. at 27, to provide Uclearance around the spreader 2O so that the spray will not'be unduly confined but may spread out over a suiicient area to reach the entire surface of the pan 28 Which is suitably supported above the nozzle.

In operation, the pan is supported upon a suitable; carriage in inverted position over ,pairoffnozzles each ot which is'designed to act upon one end portion ol the pan. The air` supply pipe isy connected to any convenient reservoir -or source of supply of air `under pressure and. the grease pipe 6 is connected with va suitable tank in which al Suppl ofheated yor melted grease is maintained. Vlien a pan-is to be greased, the air valve 8 is opened and a stream of air will thereupon lioW into the air chamber 2 ofv the lnozzle and Will passtherefrom through the passages 17 yinto and'tlirough thekspace 26 so as to floWi upwardly with considerable velocity and force. It Willy be noted that the combinedarea' of all the passages 17 is much less'than ythe area ofxthe'chamber 2 'so that the air will be ,confined by the passages and Will, consequentlyfescape therefrom under y very high Pressure Y n Inasmuch as the passages 18 communicate directly Withthe space 26, the air under pressure flowing at high velocity across the ends of said passages Will suck portions of the grease supply through the passages and will at once atomize the same. The greater portion of the commingled airA and grease Will flow against the flared portion of the spreader 20 and Will be thereby diverted so that as it escapes upwardly it Will spread over a large area While theremalining portion of the mixture Will tend to spread immediately upon issuing from-the passage 26, the result being that during operation a line mist or spray of grease and air Hows upwardly from the nozzle and spreads to such an extent that the entire surface of the pan Will be greased. Inasmuch as all the vWorking parts of the nozzle are circular, the spreading of the grease in 'all directions Will be uniform and no portion of the pan Will receive a greater quantity of grease than any other portion, and the flow can be so controlled by manipulation of the air cut-off' valve that no part of the pan will receive an excessive supply of grease.

rlhe construction of my present nozzle is such that the parts may be vvery easily assembled and disassembled and leakagev is avoided LWithout the use of packing.

form of the several parts is also such that ,Y

manufacturing is tacilitatedand the cost of 1. A spray nozzle lcomprising a basel meiny ber including an-annular Wall, an air supply element leading through, said wall, and Va greasesupply element leading from Vits bottom, 4an intermediate member covering the top kof the base member secured to said grease supply element kand resting on and forming a ground .joint with said Wall, said intermediate member having a central bore constituting a passage forgrease and also having spaced openings throughl its bottom constituting air passages in communication with the interior'ol therbase member and being further provided Witli lateral passages leadingy `from said central bore, a spreader at the upper end of lsaid intermediate member, and a circumscribing cap member secured upon the intermediate inember and cooperating therewith to define an yair passage in communication with said grease supply tothe depending nipple, an

air supply connectionon the side of the base member, an intermediate lmember having a depending hub threaded onto the upstanding nipple ot the base member and having its lower end constructed to rest on and form a ground joint with the upper edge ot the base member, said intermediate member having air passages through its lower portion in communicationwith the interior of the base member and having a central bore alined with the bore of said nipple and being further provided with lateral passages leading from said bore near its upper end, a cap member secured in the intermediate member and forming therewith a passage communicating with the air passages through the lower portion of the intermediate member and extending across the passages leading laterally from the bore of the intermediate member, and a spreader secured in and closing the upper end of the intermediate member concentric with the cap member.

3. A spray nozzle comprising an annular open top base member, means for connecting the base member with an air supply, an intermediate member secured on and extending over the base member, means for connecting the intermediate member with a grease supply, said member having air passages through its lower portion in communiction with the interior of the base member and having a central upstanding conical portion through which a central bore and lateral passages for grease are formed, and a cap member secured upon the intermediate member and having a tapered bore encircling the conical portion of the intermediate member in spaced relation thereto to deine a passage communicating with the air passages through the lower portion of the intermediate member and extending across the outer ends of the grease passages therein.

1l. A spray nozzle comprising an annular open top base member, means for connecting the base member with an air supply, an intermediate member secured on and covering the top of the base member and having air passages through its lower portion communicating with the interior of the base member, means f for connecting the intermediate member With a grease supply, the intermediate member having a central upstanding conical portion located inwardly ot' the air passages therethrough and through which grease passages are formed and having an annular rim spaced from the conical portion, and a cap member fitting within and secured to the annular rim of the intermediate member and having a tapered bore encircling the conical portion ot the intermediate member in spaced relation thereto to deiine a passage communicating with said air passages and extending across said grease passages. b

5. A spray nozzle comprising an annular open top base member, means for connecting said base member with a source of air under pressure, an intermediate member secured upon the base member and having air passages through its lower portion communicating with the interior of the base member', means for connecting the intermediate member With a grease supply, the intermediate member having a central upstanding conical portion disposed inwardly of said air passages and through which grease passages are formed, a cap member secured upon the intermediate member and having a tapered bore encircling the conical portion ot the intermediate member in spaced relation thereto and having a flared portion leading from the upper end of the tapered bore, and a spreader secured in and closing the upper end of the intermediate member and having the lower portion of its surface flush with the conical portion of said member and its upper end portion flared whereby to spread a stream issuing between the cap member and the intermediate member.

In testimony whereof I aiiix my signature.

sANDER Deens. [a e] lOO 

